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  <title>Used to determine whether Phar write operations are being buffered, or are flushing directly to disk</title>

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</div><hr /><div id="phar.isbuffering" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Phar::isBuffering</h1>
  <p class="verinfo">(PHP &gt;= 5.3.0, PECL phar &gt;= 1.0.0)</p><p class="refpurpose"><span class="refname">Phar::isBuffering</span> &mdash; <span class="dc-title">Used to determine whether Phar write operations are being buffered, or are flushing directly to disk</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-phar.isbuffering-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><strong>Phar::isBuffering</strong></span>
    ( <span class="methodparam">void</span>
   )</div>


  <p class="para rdfs-comment">
   This method can be used to determine whether a Phar will save changes
   to disk immediately, or whether a call to <span class="function"><a href="phar.stopbuffering.html" class="function">Phar::stopBuffering()</a></span>
   is needed to enable saving changes.
  </p>
  <p class="para">
   Phar write buffering is per-archive, buffering active for the
   <em>foo.phar</em> Phar archive does not affect changes
   to the <em>bar.phar</em> Phar archive.
  </p>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-phar.isbuffering-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns <strong><code>TRUE</code></strong> if the write operations are being buffer, <strong><code>FALSE</code></strong> otherwise.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-phar.isbuffering-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-659">
    <p><strong>Example #1 A <span class="function"><strong>Phar::isBuffering()</strong></span> example</strong></p>
    <div class="example-contents"><p>
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$p&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">Phar</span><span style="color: #007700">(</span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">'/brandnewphar.phar'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'brandnewphar.phar'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$p2&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">Phar</span><span style="color: #007700">(</span><span style="color: #DD0000">'existingphar.phar'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$p</span><span style="color: #007700">[</span><span style="color: #DD0000">'file1.txt'</span><span style="color: #007700">]&nbsp;=&nbsp;</span><span style="color: #DD0000">'hi'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$p</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">isBuffering</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$p2</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">isBuffering</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?&gt;<br /></span>=2=<br /><span style="color: #0000BB">&lt;?php<br />$p</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">startBuffering</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$p</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">isBuffering</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$p2</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">isBuffering</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">$p</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">stopBuffering</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;<br /></span>=3=<br /><span style="color: #0000BB">&lt;?php<br />var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$p</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">isBuffering</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$p2</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">isBuffering</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
bool(false)
bool(false)
=2=
bool(true)
bool(false)
=3=
bool(false)
bool(false)
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-phar.isbuffering-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="phar.startbuffering.html" class="function" rel="rdfs-seeAlso">Phar::startBuffering()</a> - Start buffering Phar write operations, do not modify the Phar object on disk</span></li>
    <li class="member"><span class="function"><a href="phar.stopbuffering.html" class="function" rel="rdfs-seeAlso">Phar::stopBuffering()</a> - Stop buffering write requests to the Phar archive, and save changes to disk</span></li>
   </ul>
  </p>
 </div>


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